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| 科研成果 |
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| 论文题目： |
ADVANCED DYNAMIC CHANNEL ACCESS STRATEGY IN SPECTRUM SHARING 5G SYSTEMS |
| 第一作者： |
Lin SY(林思雨);Kong LH(孔令和);Gao, Qian;Khan, Muhammad Khurram;Zhong ZD(钟章队);Jin X(金曦);Zeng P(曾鹏) |
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| 发表刊物： |
IEEE WIRELESS COMMUNICATIONS |
| 发表年度： |
2017 |
| 卷,期,页： |
24,5,74-80 |
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| 论文摘要： |
5G wireless communications aim at providing higher data rates, spectral efficiency, and energy efficiency than 4G. To achieve this target, the spectrum resource with low utilization is emptied out for 5G refarming. The refarmed spectrum is of effective propagation nature; however, it leads to extensive competition between PTOs and DTOs. To mitigate such competition, dynamic spectrum sharing should be realized. For this purpose, a spectrum sharing framework of a 5G system is designed in this article, in which the public users and dedicated users can access the sharing spectrum dynamically. In the framework, to ensure the QoE of the secondary users in a spectrum sharing system, the DTO in this case, an advanced dynamic channel access strategy is proposed. The spectrum sharing system states are modeled as a finite state Markov chain, and are used to analyze the system state transition model. Based on the analysis results, the optimal dynamic channel access strategy with minimum queuing time for DTO is derived by a Markov decision process. Extensive simulations show that the proposed dynamic channel access strategy can achieve the optimal queuing time. |
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